CVE-2026-42520 Jenkins Credentials Binding Plugin has a path traversal vulnerability
Attackers can write files to arbitrary locations via unsanitized credential names, potentially achieving remote code execution on Jenkins nodes.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-42520?
CVE-2026-42520 is a high-severity path traversal vulnerability in Jenkins Credentials Binding Plugin, published on 29 Apr 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
Jenkins Credentials Binding Plugin 719.v80e905ef14eb_ and earlier does not sanitize file names for file and zip file credentials, allowing attackers able to provide credentials to a job to write files to arbitrary locations on the node filesystem, which can lead to remote code execution if Jenkins is configured to allow a low-privileged user to configure file or zip file credentials used for a job running on the built-in node.
Weakness: CWE-22
Which versions are affected by CVE-2026-42520?
2 open source packages ship an affected version, including org.jenkins-ci.plugins:credentials-binding. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
org.jenkins-ci.plugins:credentials-binding Maven | All versions | 720.v3f6decef43ea |
org.jenkins-ci.plugins:credentials-binding Maven | All versions | 720.v3f6decef43ea |
Products include Jenkins Credentials Binding.
How do I fix CVE-2026-42520?
Upgrade org.jenkins-ci.plugins:credentials-binding to 720.v3f6decef43ea or later.
Upgrade, and resolve every user-supplied path against an allowed base folder before opening it. More about Path traversal.
Is CVE-2026-42520 being exploited?
There is no known exploitation of CVE-2026-42520 in the wild and no public exploit code.
Other vulnerabilities in Jenkins Credentials Binding Plugin
- CVE-2026-48922 Jenkins Credentials Binding Plugin does not properly sanitize file names for file and zip file credentials
- CVE-2025-53650 Jenkins Credentials Binding Plugin vulnerability can expose sensitive information in logger messages
- CVE-2020-2181 Secrets are not masked by Jenkins Credentials Binding Plugin in builds without build steps
- CVE-2019-1010241 Jenkins Credentials Binding Plugin Stores Passwords in a Recoverable Format
- CVE-2022-20616 Incorrect Permission Assignment for Critical Resource in Jenkins Credentials Binding Plugin
Sources
Also known as GHSA-p2rf-wpxj-mx2g.